<VV> Early Spyder fuel return

[Duane, Jim (US SSA)]

Hi all.

	I was off this weekend and didn't get my chance to fill the bit
bucket...  First of all, I'm not sure anybody answered Jim B's question.
To properly install a pressure regulator (low pressure, like the Clark's
http://www.corvair.com/user-cgi/catalog.cgi?function=goto&catalog=MAIN&s
ection=MAIN&page=65 )
You need to put it in line with the fuel line exiting the filter and
entering the carb.  My reason was for chronic flooding at idle which I
got even though I had a healthy fuel return line and even used another
vendor's heavy duty float valve.
	I experimented by setting the regulator to MAX and idling,
turning the regulator down until flooding ceased.  (Ironically, it's set
at 3psi like the picture on the Clark's page). I run a "non standard"
distributor and carb and those may add to my particular situation.
	So, did Chevy install the fuel return line to prevent vapor lock
or remove static pressure from the wimpy float valve?  All I can tell
you is that I have only experienced the latter and not the former.  

Jim Duane
'66 180 Corsa CVT 
Colonial Corvairs
CORSA     


-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Tony Underwood
Sent: Saturday, January 20, 2007 4:42 PM
To: VirtualVairs at corvair.org
Subject: Re: <VV> Early Spyder fuel return

At 03:46 PM 1/19/2007, cjcavitt at comcast.net wrote:
>I don't know about the keeping it cool part but i have alway been 
>under the impression that the return was a cure for vapor lock like 
>ed just said, i don't know if it keeps it any cooler but by having 
>an open end at the return line it keeps bubbles from forming and 
>stopping flow so it can circulate the fuel and keeping out the vapor 
>lock. anyway that what ive always been told and believed for years 
>but maybe not true.  curt



I wonder...

The '69 Monza here has a return line and it has *certainly* 
experienced vapor lock on more than one occasion.



tony..  

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